/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
using System;
using System.Text;

namespace ActiveMQ.Util
{
    public class AtomicBoolean
    {
        bool value;

		public bool Value
		{
			get
			{
				lock (this)
				{
					return value;
				}
			}
			set
			{
				lock (this)
				{
					this.value = value;
				}
			}
		}

        public AtomicBoolean(bool b)
        {
            value = b;
        }

        public bool CompareAndSet(bool expected, bool newValue)
        {
            lock(this)
            {
                if (value == expected)
                {
                    value = newValue;
                    return true;
                }
                return false;
            }
        }
    }
}
